package collection;

import java.util.ArrayList;
import java.util.Collection;

//contains包含
//remove删除
//集合某些元素会受到equals方法影响，比如contains（）和remove（）
public class CollectionDemo02 {
    public static void main(String[] args) {
        Collection c=new ArrayList();
        c.add(new Point(1,2));
        c.add(new Point(3,4));
        c.add(new Point(5,6));
        c.add(new Point(7,8));
        c.add(new Point(9,0));

        System.out.println(c);

        Point point=new Point(1,2);
        boolean contains = c.contains(point);
        System.out.println(contains);

        c.remove(point);
        System.out.println(c);
    }
}
